Switch stand and lock.



f iosEPH' WALTER roRP EiYoF,"touisvrttn, KENTUCKY.

' 'i wiapasi ia a ai oc This invention relates to means for lockingrailroad switches; and the objects of my improvement are, to provide arailroad switchck which cannot. be removed or detached from the body ofthe switch-stand, to provide a railroad switch lockfrom which the keycannot be removed except when the switch is fully locked, thuspreventing switches from being left unlocked and liable to be shifted bypersons withoutauthority to do so, to 'facilltate placing theresponsibility for irregularity in the position of switches, and torovide a combined switchstand and lock which may be cheaplymanufactured. These objects I accomplish by means of the mechanism shownin the accompanying drawing, in which:

Figure 1 is a frontelevation; Fig. 2, a transverse section; Fig. 3, asection on line B; Fig. 4, a top plan View; Fig. 5, a perspective viewof the locking bolts and dividing plate; and, Fig. 6, a perspective viewof the key. r v

Similar reference numerals refer to similar parts. throughout theseveral views of the drawing.

The lower section 1 and the upper section 2 constitute the usual case ofthe switch-stand. The lever 3 and weight 4 are of the usual form andserve to throw the switch. Within the stand are the bevel gear 5 andbevel pinion 6, gear 5-being secured on the upright shaft and gear 6secured'on the shaft with lever 3. Pinion 6 is provided with a hub 17 ofconsiderable diameters The hub 17 is provided with notches 18 and 19diametrically arranged and in such position that when the switch is openone of the notches is up and when it is c osed the oppositenotch is up.On the top of section 2 is an integral In or pillar 7 cored verticallyto receive the bolt of the lock which consists-of'flat pieces of steel10 and 11 with a strip of brass 12 be- -tween them. The bolt is notchedat 13 to receive thekey. The bolt 1011 is surmounted by a spring 14, andthe spring by a cap 8 which covers 'the'upper end of the opening and isriveted in by means of a trans- Verse rivet 9. A key-hole 16 is providedin A, p .s safi sgm i Letters Patent. 3 Application filed cabbage,19,07. Seria1 Noh399,331.

comprising a casing,

mental "ea. c, 1908 pillar 7'. The pillar"? preferably extended downwardsoas to form bearing-lugs 20 and 21' toserve as a bearing for hub 17 totake'the side thrust incident to the resistance of bolt 1O 1'l againstthe sides of keepers 18 and19, and thusprevent bending the shaft or overstraining the outer bearing of the shaft. This construction also addssteadiness and security to the switch by preventing lost motion.

It will be understood that key 15 may be inserted in key-hole 16 andturned to raise bolt 10 1-1, butwhen the key has been turnedsufficiently to raise the bolt to its up or limit itsbit comes incontact with the wall of pillar 7 and cannot be turned further and willtherefore hold the bolt in the elevated position. The key cannot beremoved while the "UNITED"STATESMPATENT, OFFICE.

bolt is in the elevated position, and in order to remove the key the,bolt must be lowered. The bolt cannot be lowered unless either notch 18or 19 in hub 17 is brought into r'egister therewith, or in other words,when the switch is either entirely open or entirely closed. 1 Thisprevents the switch-man from leaving the switch only partly open orpartly closed without leaving his key, by which he may be identified.

Having thus described my invention so that any one skilled in the artpertaining thereto may make and use it, I claim:

1. A combined switch-stand and lock, a lever for throwing the switch, ashaft, a hub ripheral keeper notches on said shaft, a verticallyarranged socket for a lock-bolt in said casing, and a slidably mountedlock-bolt mounted in said socket and adapted to be shot into the keepersin said hub.

2. A look for railroad switches, comprising in combination with aswitch-stand having a shaft for throwing the switch, a hub provided withsuitably located keepers in its periphery, a vertical socket for thelock-bolt provided in the casing of the switch-stand adj acentsaid hub,a bolt mounted loosely in said socket and adapted to be shot into one ofsaid keepers in said hub, and a bearing for said hub in said casing.

3. A look for railroad switches, comprising a socket for a bolt in thecasing of the switchstand, a bolt mounted insaid socket, said boltconsisting of a plurality of bars with a plate between, said bars beingadapted to receive the bit of a key, a key having a ward to straddlesaid plate, a key-hole in the provided with peswitch-stand, the parts ofthe lock being so arranged that when the bolt is released from a keeperthe bit of the key impinges on the wall of the socket, so that it cannotbe turned in either direction and cannot be removed till said bolt againfully engages a keeperin said hub.

4. In a lock for railroad. switches, a stationary pillar 7 forming thecasing for a bolt, a com osite bolt 101112 loosely mounted in sai pillar7, said pillar 7 provided with a key-hole 16, a keeper-member 17provided with keepers 18 and 19, a key 15, said bolts being notched toreceive the bit of said key, all so arranged and cooperating that when Isaid bolt is released from its keepersby means JOSEPH WALTER TORPEY.

Witnesses:

D. B. MEDANIOH, MINNIE C. ROLLWAGE.

